Is there a shortcut for switching pivot point?
, : Bounding Box Center

. : 3D Cursor

Ctrl + . : Individual Origins

Alt + , : Toggle Manipulate center points



If you want to customize the shortcuts, open the Blender User Preferences > Input, set the Filter Type "Key-Binding" and type , in the search field.





You'll find the list of the Assignement Values here:

http://www.blender.org/api/blender_python_api_2_74_0/bpy.types.SpaceView3D.html?highlight=bounding_box_center#bpy.types.SpaceView3D.pivot_point